High Sensitivity, 1 MHz, GMR-Based Current Sensor IC
in Space-Saving, Low Resistance QFN and SOIC-8 Packages
ACS70331
ACS70331EESA-2P5U3 PERFORMANCE CHARACTERISTICS: Valid over full range of TA, and VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Unit
NOMINAL PERFORMANCE [2]
Current Sensing Range
Sensitivity
IPR
0
–
–
–
2.5
–
A
mV/A
V
Sens
I
PR(min) < IP < IPR(max)
800
0.25
Zero Current Output Voltage
ACCURACY PERFORMANCE
VIOUT(Q)
IP = 0 mA, TA = 25°C
–
Measured at IP = IPR(max), TA = 25°C
–
–
±2
±5
–
–
%
%
Total Output Error[3]
ETOT
Measured at IP = IPR(max), TA = –40°C to 85°C
TOTAL OUTPUT ERROR COMPONENTS [4][5] ETOT = ESENS + 100 × VOE/(Sens × IP)
Measured at IP = IPR(max), TA = 25°C
–
–
–
–
±1.5
±3
–
–
–
–
%
%
Sensitivity Error
Offset Voltage
Esens
Measured at IP = IPR(max), TA = –40°C to 85°C
IP = 0 A, TA = 25°C
±15
±55
mV
mV
VOE
IP = 0 A, TA = –40°C to 85°C
[1] Typical values with +/- are 3 sigma values.
[2] See Ideal Output Transfer Curve section.
[3] Percentage of IP, with IP = IPR(max)
.
[4] A single part will not have both the maximum/minimum sensitivity error and maximum/minimum offset voltage, as that would violate the maximum/minimum total output
error specification. Also, 3 sigma distribution values are combined by taking the square root of the sum of the squares. See Application Information section.
[5] See Lifetime Drift section for accuracy drift under different application temperatures, currents, and fields.
ACS70331EESA-2P5B3 PERFORMANCE CHARACTERISTICS: Valid over full range of TA, and VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Unit
NOMINAL PERFORMANCE [2]
Current Sensing Range
Sensitivity
IPR
–2.5
–
–
2.5
–
A
mV/A
V
Sens
I
PR(min) < IP < IPR(max)
400
1.5
Zero Current Output Voltage
ACCURACY PERFORMANCE
VIOUT(Q)
IP = 0 mA, TA = 25°C
–
–
Measured at IP = IPR(max), TA = 25°C
–
–
±2
±3
–
–
%
%
Total Output Error[3]
ETOT
Measured at IP = IPR(max), TA = –40°C to 85°C
TOTAL OUTPUT ERROR COMPONENTS [4][5] ETOT = ESENS + 100 × VOE/(Sens × IP)
Measured at IP = IPR(max), TA = 25°C
–
–
–
–
±1.5
±3
–
–
–
–
%
%
Sensitivity Error
Offset Voltage
Esens
Measured at IP = IPR(max), TA = –40°C to 85°C
IP = 0 A, TA = 25°C
±10
±40
mV
mV
VOE
IP = 0 A, TA = –40°C to 85°C
[1] Typical values with +/- are 3 sigma values.
[2] See Ideal Output Transfer Curve section.
[3] Percentage of IP, with IP = IPR(max)
.
[4] A single part will not have both the maximum/minimum sensitivity error and maximum/minimum offset voltage, as that would violate the maximum/minimum total output
error specification. Also, 3 sigma distribution values are combined by taking the square root of the sum of the squares. See Application Information section.
[5] See Lifetime Drift section for accuracy drift under different application temperatures, currents, and fields.
7
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955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com